In 1453 when the last vestige of ancient Roman power fell to the Turks, the city officially shifted religions -- although the Patriarch, or Pope, of the Orthodox Church continued to live there, and still does -- and became the capital of the Ottoman Empire.

With a membership currently estimated at over 85 million members worldwide, the Anglican Communion is the third largest Christian communion in the world, after the Roman Catholic Church and the Eastern Orthodox Churches.

Anglican clergy who join the Orthodox Church are reordained ; but Orthodox Churches hold that if Anglicanism and Orthodoxy were to reach full unity in the faith, perhaps such reordination might not be found necessary.

** Herman of Alaska ( Russian Orthodox Church and related congregations )

The Eastern Orthodox Church observes several All Souls ' Days during the year.

The Eastern Orthodox Church dedicates several days throughout the year to the dead, mostly on Saturdays, because of Jesus ' resting in the Holy Sepulchre on that day.

* 1962 – Representatives from the Russian Orthodox Church and Vatican City meet in Metz, France, and come to an agreement wherein the Russian church would send observers to the Second Vatican Council and in exchange, the Roman Catholic Church would refuse to condemn Communism.

In the Orthodox Church, only actual monastics are permitted to be elevated to the rank of Archimandrite.

Normally there are no celibate priests who are not monastics in the Orthodox Church, with the exception of married priests who have been widowed.

** Basil Fool for Christ ( Russian Orthodox Church )

Arianism is defined as those teachings attributed to Arius which are in opposition to mainstream Trinitarian Christological doctrine, as determined by the first two Ecumenical Councils and currently maintained by the Roman Catholic Church, the Eastern Orthodox Churches, the Oriental Orthodox Churches, and most Reformation Protestant Churches.

In the Catholic Church ( both the Latin Rite and Eastern Catholic ), Eastern Orthodox, Coptic and Anglican abbeys, the mode of election, position, rights, and authority of an abbess correspond generally with those of an abbot.

( Eastern Orthodox Church )

* 1927 – Metropolitan Sergius proclaims the declaration of loyalty of the Russian Orthodox Church to the Soviet Union.

*** Buhe ( Ethiopian Orthodox Tewahedo Church )

( Russian Orthodox Church and Georgian Orthodox Church )

** Abraham of Smolensk ( Eastern Orthodox Church )

It was then that he began to study the principles of law and administration under Konstantin Pobedonostsev, then a professor of civil law at Moscow State University and later ( from 1880 ) chief procurator of the Holy Synod of the Orthodox Church in Russia.

* Saint Anastasius Sinaita ( of Sinai ) – theologian, Father of the Eastern Orthodox Church, monk, priest, and abbot of the monastery at Mt.

Although Orthodox Judaism acknowledges that rabbis made many decisions and decrees regarding Jewish Law where the written Torah itself is non-specific, they did so only in accordance with regulations given to them by Moses on Mount Sinai ( see Deuteronomy 5: 8-13 ).

About the year 1337, hesychasm attracted the attention of a learned member of the Orthodox Church, Barlaam, a Calabrian monk who at that time held the office of abbot in the Monastery of St Saviour in Constantinople and who visited Mount Athos.

The saint's right hand, with which he baptised Jesus, is claimed to be in: the Serbian Orthodox Cetinje monastery in Montenegro ; Topkapi Palace in Istanbul ; and also in the Romanian skete of the Forerunner on Mount Athos.

The most important of them were the ones in the monasteries of Mount Athos for Orthodox Christians, and the library of the Saint Catherine's Monastery, Mount Sinai for the Coptic Church.

Orthodox Judaism holds that on Mount Sinai the Written Law was transmitted along with an Oral Law.

For instance, Orthodox Judaism holds that the Torah was received from God on biblical Mount Sinai, and Muslims consider the Qur ' an to have been revealed word by word and letter by letter.

The Codex Sinaiticus came to the attention of scholars in the 19th century at the Greek Orthodox Monastery of Mount Sinai, with further material discovered in the 20th and 21st centuries.

One of the great centres of Orthodox monasticism is Mount Athos in Greece, which, like the Vatican State, is self-governing.

Haredi Jews consider their belief system and religious practices to extend in an unbroken chain back to Moses and the giving of the Torah on Mount Sinai, and they regard non-Orthodox, and to an extent Modern Orthodox, streams of Judaism to be deviations from authentic Judaism.

The Russian Orthodox Church also maintains a Convent of the Ascension on the top of the Mount of Olives.

A Greek Orthodox Chapel at the top of Mount Sinai

Rabbinical consensus in the post-1967 period in the Religious Zionist stream of Orthodox Judaism held that it is forbidden for Jews to enter any part of the Temple Mount, and in January 2005 a declaration was signed confirming the 1967 decision.

However, there is a growing body of Modern Orthodox and national religious rabbis who encourage visits to certain parts of the Mount, which they believe are permitted according to most medieval rabbinical authorities.

The Temple Mount and Eretz Yisrael ( Land of Israel ) Faithful Movement is an Orthodox Jewish movement, based in Jerusalem, Israel whose goal is to rebuild the Third Jewish Temple on the Temple Mount in Jerusalem and re-institute the practice of ritual sacrifice.

" The Roman Catholic Mass or Orthodox Divine Liturgy in many respects more closely resembles the Temple sacrifice than anything modern Jews practice, since in Judaism there is no current Temple in Jerusalem, just the Temple Mount.

Nowadays, the monastic state of Mount Athos, having a history of over a millennium, is a center of Christian spirituality and asceticism in Eastern Orthodox tradition.

The Metéora (, " suspended rocks ", " suspended in the air " or " in the heavens above "-etymologically similar to " Meteorite ") is one of the largest and most important complexes of Eastern Orthodox monasteries in Greece, second only to Mount Athos.

David Gareja is a rock-hewn Georgian Orthodox monastery complex in the Kakheti region of Eastern Georgia, on the half-desert slopes of Mount Gareja, some 60 – 70 km southeast of Georgia's capital Tbilisi.

* The Orthodox Church of Mount Sinai

Hilandar Monastery (,, ) is a Serbian Orthodox monastery on Mount Athos in Greece.

Image: Ortodosse107. jpg | Bell tower of the Eastern Orthodox monastery on Mount Tabor

This brought fame to Lazar on Mount Athos, the centre of Orthodox monasticism.